KF045AR0
3/4" Constant Section Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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KF045AR0 Bearing Product Overview & Core Advantages
The KF045AR0 is a high-performance thin-section angular contact ball bearing designed for applications requiring exceptional precision and space optimization. As part of the Reali-Slim Open Bearings series, it features a single-row construction with a 30° contact angle, enabling it to support significant combined loads—simultaneously handling radial loads and thrust loads in one direction. Its inch-series dimensions (4.5" bore, 6" OD, 0.75" width) make it ideal for compact, weight-sensitive designs. Manufactured to ABEC-1 precision tolerances, this bearing delivers reliable performance in high-accuracy systems.
KF045AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| KF045 | Bore Size: 4.5 inches | Specifies the large bore diameter for the thin-section design |
| A | Angular Contact Design | 30° contact angle optimized for combined loading |
| R0 | Open (No Seal) | Enables custom lubrication schemes and maximum speed capability |
KF045AR0 Bearing Structural Features & Performance Benefits
Thin-Section Construction: With a consistent cross-section across sizes, this bearing maximizes space utilization while minimizing weight (2.14 lbs), making it perfect for robotics and aerospace applications where envelope constraints are critical.
High Load Capacity: The 30° contact angle and chrome steel components deliver exceptional load ratings—3966 lbf dynamic and 7090 lbf static radial, plus 9050 lbf axial static capacity—enabling reliable operation under combined loading conditions.
Precision Performance: Manufactured to ABEC-1 tolerance standards with tight dimensional controls (bore/OD tolerance: -0.0008"–0") and minimal radial internal clearance (0.0000–0.0005"), ensuring smooth, accurate rotation.
Enhanced Durability: The brass cage provides superior guidance and stability at higher speeds, while the chrome steel rings and balls offer excellent wear resistance and longevity.
KF045AR0 Bearing Typical Application Areas
- Robotics: Rotary joints, actuator arms, and precision positioning systems
- Aerospace: Control mechanisms, satellite positioning systems, and instrumentation
- Medical Equipment: CT scanners, surgical robots, and diagnostic imaging systems
- Semiconductor Manufacturing: Wafer handling robots and precision stages
- Industrial Automation: Rotary tables, indexing heads, and precision gearboxes
